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aient @ffice @latten gisten IMPROVEMENT IN PITMAN CONNECTIONS FOR HARVESTERS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, HIRAM L. VVANZER, of Clyde, in the county of Sandusky, and State of Ohio, have invented a new and improved Pitman Connect-ion for llarvesters; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings forming part of this specification.

The object of this invention is to reduce the friction of the cutting apparatus and its connections on harvesters, and also to prevent the rattling of the said connections on thciribecoming loose by wearing.

My invention consists in the manner of connecting the cutting bar to the pitman, so that the connecting-pin may be easily tted up, when worn, to prevent rattling. In the annexed drawing my invention is illustrated-V Fignre 1 being a side elevation of the pitma connection; and

Figure 2 being a pla`n or top view of the same, partly in section, the plane of section'being indicated by the line x x, fig. 1.

Figures 3, 4, 5, 6, 7, andl 8, are detail views, and will be hereinafter referred to.

Similar letters of reference indicate like parts.

The pitman-wheel A is hung and operated in the usual manner. It is connected with the pitman B by a. pin, a, which is shown more particularly in tig. 2. 'lhat portion of the pin a which passes through the wheel A is tapering as shown, and projects towards the front, so that by drawing the nut b, which screws over thein'ner screw end c of the pin a, tight, the pin may be held secure in the wheel, und will be also prevented from rattling. The outer end d of the pin ads of smaller diameter than the tapering parts of the pin, and is set eccentrically upon the same, as shown in g. 2. The pitman B is pivotcd on this eccentric portion dof the pin. Between the screw end c and the' end of the tapering part, the pin a is made square, and ts into a washer, e, which is provided with a square hole. The said washer c is preventedfrom revolving by two, more or less, pinsf, which are secured to its inner side, and it into appropriate holcs in the inside of the wheel. Fig. 3 shows an inside view of the wheel A, which-is hung on the axle C. The pin a is shown in this view, the washer e and nut b being removed, thus exposing the hotles y, into which the pins ofthe washer fit. Fig.' deis an inside view ofthe washer e, showing the pinsfandthe square hole, into which the square portion of the pin a ts. It is easily understood' that by turning the pin a, the eccentric connecting portion d of the saine is brought nearer to or farther from the centre C of the wheel, thereby changing the length of stroke of the lcutting bar D, which is secured to the lower end of the pitman, To turn the pin a in the wheel, the nut b must be removed; the pin is then drawn forward and replaced'in a different position, or the washer e may also be slightly drawn back and revolved, so as to be placed in a different position., The part a of the eccentric pin may also be made polygonal, as shown in figs. 7 and 8; the former beingfa vertical sectional view through the wheel A, taken on the line yy, iig. 8; the latter being a horizontal sectional View ofthe wheel. Both views are drawn on a. larger scale than figs. 1 and 2. The part a of the pin is polygonal, and fits into a corresponding hole in the wheel A; the pin is thus prevented from turning, and the washer e thus becomes superuous. The polygonal part of the pin is pyramidaltand is also provided with a screw, c, on its end, so that it may be secured in any position by the nut b. 'lhe Pitman B isconnected to4 an upright, z, on the cutter` bar D, by means of the pin z'. This pin consists of two semicylindrical halves, between which the packing k is laid. The two parts may be held together by screws Z, the heads of which may be sunk, and rest on a leaden or other packing, m, as shown in iig. 5, which is a longitudinal section, showing the pin z'; g. 6 being an end view of the same. When the pin is partially worn out, more packing may be inserted, and thus thejoint is always tted well, and is-kept'from rattling.

What I claim as new, and desire to secure by Letters Patent, is

I claim the pin t', in combination with the packing k, all made and operating `substantially as and for the purpose herein shown and described.

HIRAM L. WAN ZER.

Witnesses:

J. ZEPEINCK, W. G. GRANT.` 

